US Patent No: 6,771,796

Number of patents in Portfolio can not be more than 2000

Methods for identifying equipment used in counterfeiting

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ALSO PUBLISHED AS: 20020021825
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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Line art on a banknote or other security document is slightly changed to effect the encoding of plural-bit digital data (i.e. the banknote is digitally watermarked). When such a banknote is thereafter scanned, the resulting image data can be recognized as corresponding to a banknote by detection of the encoded data. (Alternatively, the image data can be recognized as corresponding to a banknote by machine detection of other forms of watermarking, or by reference to visible structures characteristic of banknotes.) In response to detection of a banknote, the detecting apparatus (e.g., a scanner, photocopier, or printer) can intervene by inserting forensic tracer data (e.g. steganographically encoded binary data) in the image data. The tracer data can memorialize the serial number of the machine that processed the banknote data and/or the date and time such processing occurred. To address privacy concerns, such tracer data is not normally inserted, but is so inserted only when the image data being processed is recognized as corresponding to a banknote. Any printed output from such image data will include the tracer data, permitting identification of equipment used in its reproduction.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DIGIMARC CORPORATIONBEAVERTON, OR834

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rhoads, Geoffrey B West Linn, OR 941 40133

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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DIGIMARC CORPORATION (8)
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Other [Check patent profile for assignment information] (3)
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Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
DIGIMARC CORPORATION (43)
8,505,108 Authentication using a digital watermark 0 2002
8,144,368 Automated methods for distinguishing copies from original printed objects 3 2003
8,204,222 Steganographic encoding and decoding of auxiliary codes in media signals 3 2005
8,059,858 Identification document and related methods 5 2006
8,045,748 Watermark embedding functions adapted for transmission channels 1 2006
7,991,184 Apparatus to process images and video 0 2007
8,290,202 Methods utilizing steganography 0 2007
7,987,094 Audio encoding to convey auxiliary information, and decoding of same 0 2007
8,051,169 Methods and systems useful in linking from objects to remote resources 2 2007
8,006,092 Digital watermarks for checking authenticity of printed objects 0 2007
8,312,168 Methods for linking from objects to remote resources 0 2007
8,301,893 Detecting media areas likely of hosting watermarks 0 2007
8,391,541 Steganographic encoding and detecting for video signals 0 2007
8,355,514 Audio encoding to convey auxiliary information, and media embodying same 1 2007
8,131,760 Using object identifiers with content distribution 2 2007
8,126,272 Methods combining multiple frames of image data 2 2008
8,023,692 Apparatus and methods to process video or audio 1 2008
8,041,074 Content indexing and searching using content identifiers and associated metadata 3 2008
8,051,294 Methods for audio watermarking and decoding 0 2009
8,000,518 Methods, objects and apparatus employing machine readable data 0 2009
8,055,012 Hiding and detecting messages in media signals 0 2009
8,073,193 Methods and systems for steganographic processing 0 2009
7,974,439 Embedding hidden auxiliary information in media 4 2009
8,036,419 Digital watermarks 3 2009
8,014,562 Signal processing of audio and video data, including deriving identifying information 0 2009
7,916,354 Hiding and detecting auxiliary data in media materials and signals 15 2009
8,051,295 Benchmarks for digital watermarking 2 2009
7,936,900 Processing data representing video and audio and methods related thereto 16 2009
8,280,101 Identification documents and authentication of such documents 0 2009
8,116,516 Controlling use of audio or image content 0 2010
8,165,341 Methods and apparatus to process imagery or audio content 2 2010
8,447,067 Location-based arrangements employing mobile devices 2 2010
8,068,679 Audio and video signal processing 2 2010
8,411,898 Digital authentication with analog documents 0 2010
8,014,563 Methods and systems for steganographic processing 0 2010
8,144,924 Content objects with computer instructions steganographically encoded therein, and associated methods 0 2010
8,059,860 Steganographic encoding 0 2010
8,483,426 Digital watermarks 0 2010
8,078,697 Network linking methods and apparatus 1 2010
8,175,329 Authentication of physical and electronic media objects using digital watermarks 0 2010
8,515,121 Arrangement of objects in images or graphics to convey a machine-readable signal 0 2010
8,391,545 Signal processing of audio and video data, including assessment of embedded data 0 2011
8,644,548 Digital watermarks 0 2011
 
ALPS ELECTRIC CO., LTD. (1)
7,199,889 Printer capable of invalidating a document 2 2001
 
CABLE TELEVISION LABORATORIES, INC. (1)
7,974,495 Identification and protection of video 4 2009
 
EUROPEAN CENTRAL BANK (1)
7,991,186 Banknotes with a printed security image that can be detected with one-dimensional signal processing 2 2005
 
SONY UNITED KINGDOM LIMITED (1)
7,636,847 Material distribution apparatus 0 2002

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